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- Implement RtlRealPrecessdor and RtlRealSuccessor

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svn path=/trunk/; revision=19081
This commit is contained in:
Alex Ionescu 2005-11-09 01:39:39 +00:00
parent 767d56a1d3
commit aa2893a132
1 changed files with 44 additions and 13 deletions
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57
reactos/lib/rtl/splaytree.c
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@ -41,31 +41,62 @@ RtlDeleteNoSplay (
UNIMPLEMENTED;
}
/*
* @unimplemented
* @implemented
*/
PRTL_SPLAY_LINKS
NTAPI
RtlRealPredecessor (
PRTL_SPLAY_LINKS Links
)
RtlRealPredecessor(PRTL_SPLAY_LINKS Links)
{
UNIMPLEMENTED;
return 0;
PRTL_SPLAY_LINKS Child;
/* Get the left child */
Child = RtlLeftChild(Links);
if (Child)
{
/* Get right-most child */
while (RtlRightChild(Child)) Child = RtlRightChild(Child);
return Child;
}
/* We don't have a left child, keep looping until we find our parent */
Child = Links;
while (RtlIsLeftChild(Child)) Child = RtlParent(Child);
/* The parent should be a right child, return the real predecessor */
if (RtlIsRightChild(Child)) return RtlParent(Child);
/* The parent isn't a right child, so no real precessor for us */
return NULL;
}
/*
* @unimplemented
* @implemented
*/
PRTL_SPLAY_LINKS
NTAPI
RtlRealSuccessor (
PRTL_SPLAY_LINKS Links
)
RtlRealSuccessor(PRTL_SPLAY_LINKS Links)
{
UNIMPLEMENTED;
return 0;
PRTL_SPLAY_LINKS Child;
/* Get the right child */
Child = RtlRightChild(Links);
if (Child)
{
/* Get left-most child */
while (RtlLeftChild(Child)) Child = RtlLeftChild(Child);
return Child;
}
/* We don't have a right child, keep looping until we find our parent */
Child = Links;
while (RtlIsRightChild(Child)) Child = RtlParent(Child);
/* The parent should be a left child, return the real successor */
if (RtlIsLeftChild(Child)) return RtlParent(Child);
/* The parent isn't a right child, so no real successor for us */
return NULL;
}
/*